Write An Essay On Robins

12 years ago, in an isolated island, the robin population was happier than ever. They had the whole island to themselves and to many insects. The island was full of vegetation that gave them and the insects a home. The soil was soft and moist and easy for them to break apart. Food wasn’t a problem for them. They could easily pick off insects from leaves or pluck them out from the soil. Food was abundant and varied. Because of the accessibility of food, the robins had no special advantage one over the other, and with no competition there was no need for special advantage. After two years, “Deforestation, Inc.” cut down all the trees and plants in the area and scraped the topsoil off the whole region. When they left, the island was unrecognizable. Because the “Deforestation, Inc.” destroyed most of the island, a lot of robins died and only those that lives at the edge of the island survived. The …show more content…
Variations appeared within the population. The robin population became varied. Since not all robins were the same, not all of them acted the same. Some had an easier time finding prey than others. Those that could find pray and reproduce passed on their genes to their offspring. Those offsprings that inherited the characteristics that allowed their parents to survive and reproduce were more adaptive then those that didn’t. Since not all offsprings inherited their parents’ adaptations, not all of them survived the same. Some had an easier time finding pray and reproducing. Those robins that manage to reproduce passed on their genes to the subsequent generations and those that didn’t reproduce didn’t pass on their genes and therefore their genes died. With each subsequent generation, the genes that were favorable in the new environment were passed down and eventually only those individuals with the right genes were alive on the